Ingot-mold top.



E. F. KENNEY.

INGOT MOLD TOP.

APPLICATION FILED sEPT.23.1915.'

Patented Dec. 5, 1916.

Enwn r. KENNEY, or wEsITNONr BOROUGH, PENNSYLVANIA.

v INcOr-MOLD TOP.

Specification of Letters Patent.

Patented Dec. 5, 1916.

Animation-med september 23, 1915. serial No. 52,168.

' To all lwhom it may concern:

Be it known that I, EDWARD F. KNN'EY, -a citizen of the United States,residing in Westmont Borough, in tle county of Cambria and State ofPennsylvania, (whose post-oliice address is "Johnstown, Pennsylvania,)have invented certain new and useful Improvements in Ingot-Mold Tops and'I dohereby declare, the following to be a full, clear, and exactdescription of the 1 nvention, such as will enable others skilled mtheart to which it appertains to make and use the same.

My invention relates to a non-conductlng top for a metal'ingot mold,whereby the molten metal' which is 'poured therein, 1s maintained fluidat, or near, the top portion thereof, for a longer time than that 1nthose portions of the moilds which are adjaage, is :located entirelywithin the top lcent to, or subjected to the cooling effect of the metalpart of the mold. By means of this construction the cavity, due 'toshrinkportion of the in ot, leaving the body of the said ingot soli andof good quality.

My non-conducting top for ingot molds is 4 contained within a casing orflask preferably made of metal adapted to set upon the upper portion bfa metal ingotmold, and may be provided with means for, securing theflask to the top ofthe mold to prevent displacement.A

Within the outer casing or flask is a lining "or body of non-conductingmaterial preferably`formed of dried sand, loam, or similarnon-heat-conducting material, this lining being'thick as compared withthe casing which is held temporarily in place within the ask by means ofpms of wood or fusible' 'metal which project therein froml the flask.

The inner form of the fiask or casing is preferably made tapering withthe larger end'downward, and after the 'molten metal is poured withinthe metal mold and the or hot metal-burns of the wooden pins or meltsthe fusible pins, allowing the casing to be withdrawn from thenon-conducting loam orl sand lining, leaving said lining on the top orsink-head portion of the ingot. `In order to insure that thisnon-conducting material will remain. around the sides of the sink-headof the ingot, I may provide notches or grooves in the inner surfaces ofsaid` lining or may roughen the same in such non-conducting top, theheat of the molten' ner surface of the lining is suiicient to make i itadhere suficiently to theingot top and enable the fiask to be readilywithdrawn. In order to facilitate this withdrawal, I may, if desired,coat the inside of the metal ask with. graphite, talc or soapstone, ormay provlde it witha lining of asbestos paper, or other similar materialto insure the withdrawal of the flask, leaving the lining substantiallyintact on the sink-head. After the lining is on the sink-head and themetal of the ingot suiiiciently set, the entire ingot, including thesink-head, and the nonconducting material surrounding the sinkh ead, maybe taken and charged into a vertlcal heating or soaking-pit furnace, theaction of the non-conducting material continuing during the time whenthe heat of the ingot'is equalizing in said furnace. In this way ingotsmay be taken from the metal molds very quickly as soon as their outerskin is set and placed in the heating furnace with the non-conductingmaterial surrounding the sink-head portions, thus permitting a betteraction in'concentrating the shrinkage cavity in the sink-head portionand also conserving the initial heat of the ingot,

companying sheet of drawings forming part of this specification and inwhich like characters refer to like parts. Figure l is a verticalsectional elevatio through the' top of a metal ingot mold with mynon-conducting top thereon, thisview being taken on the line I-I of Fig.2; Fig. 2 is a top plan view of the construction shown in Fig. l; andFigs. 3 and f1 are slightly m'odied forins of ask casings which I mayuse.

Referring now to the characters of reference on the drawingszl indicates'a metal ingot mold, 2 the lifting lugs thereof, 3 the body portion ofthe ingot therein; 4 is the casing or fiask forming part of lmy ingotmold top and containingthe non-conducting rot material, 5 the topinwardly extending flange of the flask provided with a downwardlyprojecting beaded edge 6 around the pouring opening 7 of the ingot moldtop. The lifting lugs 4or staples on'the flask are indicated at 8, and 9indicates the outwardly extending base of the flask, which rests on thetop edge of the ingot mold 1. A plur'ality of sockets or holes 10 areformed near. the bottom edge on the inner face of the flask for thereception of wooden,- fusible metal or similar pins 11, which pins arereadily destroyed by heat. `.These pins project into the refractorylining 13 of the ingot mold. top for the purpose of tempo-V rarilysupporting it prior to pouring the molten metal therein.' j y v Afterthe molten met'al" has been poured into the mold and. substantiallyiills the top thereof, the heat of said metal burns the wooden pins ormelts them if they aremaade of fusible metal, so that the lining is freefrom the flask. Afterthisis done thev metal flask4 may be withdrawn,leaving the nonconducting lining on the sink-head .15',-l

which, after the cast ingot has cooled orpartially'cooled, contains theshrinkage cavity shown as 16. As shown on the drawings, 12 represents alayer of smooth `and refractory material, such as graphite, soapstone,

talc, or it may be com osed of asbestos pa- ,may be lifted, leaving thelining on the sinkhead portion4 15, of the ingot. rlhe flask 4 of theingot mold top is secured to the top of the mold in any suitable manneras vby means of clamps '17, one end `of each of which extends over thebasel Harige 9 of the flask 4, while the other end of each clamp isreceived within a notch 18.

Iny Fig. 3. I'have shown a slightly modified form of an ingot moldtopand mold' in which instead of having the lining of the ingot mold topproject over the edge of the face of the ingot mold as in Fig.' 1, thebottom inner face of the lining of the mold top is made flush with theinner surface of the mold. The flask 20 has a short bottom flange 21 andthe top outer edge of the ingot mold has a short outwardly extendinglange 22 by means of which the ingot mold top and mold may be easilysecured together by clamps 17.

ln Fig. 4,1 have illustrated another slightly modied form in which theHask 23 has an 'outwardly extending ange 24 Leonesa' at an intermediatepart thereof, the lower end of the flask 23 extending into the top ofthe mold around the inner ,edge thereof as at 25, and the lining 13 alsoprojects into the mold more or less, to make an ingot of desired lengthand weight.

Although l have shown and described my improvements in considerabledetail, I do not wish to be limited to the exact and specific detailsshown and described, but

may use such substitutions, modifications or equivalents thereof, as areembraced within ythe scope of my invention, or as pointed out ,in theclaims.

Having thus described my inventin, what I claim and desire to secure byLetters Patent is:

1. An ingot mold top comprising acasing seated on and above the upperpart of a mold,I said casing being provided with openings at the top andbottom portions thereof,`

and a non-conductinglining therein and adapted to be removedsubstantially intact therefrom.

Lf2. `An ingot mold top comprising a casingmounted on and, above-theupper portion of an'v ingot mold, said casing being open at the upperand lower .portions thereof a comparatively thick non-conducting liningextending around the inner4 side of the said and adapted to be removed'siubcasin stantially intact therefrom.

3. An ingot mold top comprising a casing or` boxlike structure with opentop and bottom, the lower portion of which is'above and rests upon thetop of the ingot mold,

the inner side surfaces ofthe same .being provided with a covering ofrefractory lubricating material on which-is a nonconducting liningtemporarily held in po s1.

tion by means destructible by heat.

4. vAn ingot mold top .comprising a-.asln open top and bottom, anon-conducting 'lining temporarily secured therein, the

lower edge ofthe lining being substantially :coincident with the lowersur/face' of the mold top and adapted to be removed sub.

stan'tially intact therefrom.

5. An ingot mold top comprising a metallic casing, the lower portion ofwhich 'is fitted within the upper end of the ingot mold, .an outwardlyextending flange near the lower edge of the casing adapted to-be seatedon top of the ingot moldjand a nonconducting lining having a roughenedinner surface temporarily secured to the inner side surface of saidcasing by means destructible by heat.

6. An ingot mold top comprising a fiask,

open top and bottom, a non-conducting lining temporarily secured thereinby means destructible by heat, the lower edge of the lining beingsubstantially coincident with the surface of the mold top. 1 l

7. An ingot mold 'top` comprising a ask,

open top and bottom, the lower opening be- In ltestimony whereof Ihereunto ailx my ing the larger, adapted to rest on the top of signaturein the presence of two Witnesses. an lngot mold, a non-conductingliningl With- EDWARD 'F KENNEY in said flask, secured thereto by meansdestructible by heat, the lower edge lof the Witnesses:

lining being substantially at the same eleva- FRED A. STAHL, tion as themold'top. LMER SEAvnY.

